... mojtaba sadegh. The default clause uses clause of The Intl By the Gregorian-in-in calendar (https://en.wikipedia.org/wiki/Gregorian_calendar) But the CAN of IT Also the use of the make OTHER calendars by Specifying a fifth parameter in the calls to IntlDateFormatterconstructor. . For the the for So by the default for the LEO for LEO previous example Would the the include a specification-in-in calendar like the the the following $ a DateTime = new a DateTime (); $ IntlDateFormatter = new IntlDateFormatter ...